Anthropic
anthropic.com › news › claude-sonnet-4-5
Introducing Claude Sonnet 4.5
September 29, 2025 - Teams can explore and validate ... known for. Sonnet 4.5 represents a new generation of coding models. It's surprisingly efficient at maximizing actions per context window through parallel tool execution, for example running multiple bash commands at once....
Reddit
reddit.com › r/claudeai › claude sonnet 4.5 is here!
r/ClaudeAI on Reddit: Claude Sonnet 4.5 is here!
August 20, 2025 -
https://www.an.com/news/claude-sonnet-4-5
Sonet 4.5 is aware of its own context window
The it knows of its own context makes it pretty fucking Lazy. Because if it reaches over 50% it starts just putting TODOs in the code and marking the Task done because "It's a massive undertaking and would take Ages. Let's just add a TODO" Had to set hooks up for that which call it a lazy piece of shit each time it tries that. More on reddit.com
83
583
October 4, 2025[FEATURE] Add support for 1M Context on Claude Sonnet 4.5
Preflight Checklist I have searched existing requests and this feature hasn't been requested yet This is a single feature request (not multiple features) Problem Statement Add support for 1M Co... More on github.com
44
Claude Sonnet 4.5 is here!
Yes papi More on reddit.com
101
472
August 20, 2025Please share your experience using a 1M context window with Sonnet 4.
I've seen hardly anyone test it out because of the high cost. Anthropic either has the highest compute costs known to the AI industry or their pricing director is insane. More on reddit.com
16
1
August 13, 2025How is Cline different from GitHub Copilot?
Cline is open-source and offers unique features like Plan/Act modes for structured development, terminal command execution, browser automation for testing, and the Model Context Protocol (MCP) for creating custom development tools.
cline.bot
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
What programming languages does Cline support?
Cline supports all major programming languages and frameworks through its AI models and can execute terminal commands, edit files, and automate browser testing across different technology stacks.
cline.bot
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
What is Cline?
Cline is an open-source AI coding assistant for VS Code that features dual Plan/Act modes, terminal execution capabilities, and the Model Context Protocol (MCP) for custom tool creation. It serves as a fully collaborative AI partner for developers.
cline.bot
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
Videos
Anthropic
anthropic.com › news › context-management
Managing context on the Claude Developer Platform
September 29, 2025 - With our latest model, Claude Sonnet 4.5, these capabilities enable developers to build AI agents capable of handling long-running tasks at higher performance and without hitting context limits or losing critical information.
Claude
docs.claude.com › en › docs › about-claude › models › whats-new-sonnet-4-5
What's new in Claude Sonnet 4.5 - Claude Docs
September 30, 2025 - Advanced context management: Sonnet 4.5 maintains exceptional state tracking in external files, preserving goal-orientation across sessions. Combined with more effective context window usage and our new context management API features, the model ...
AWS
aws.amazon.com › blogs › aws › introducing-claude-sonnet-4-5-in-amazon-bedrock-anthropics-most-intelligent-model-best-for-coding-and-complex-agents
Introducing Claude Sonnet 4.5 in Amazon Bedrock: Anthropic’s most intelligent model, best for coding and complex agents | Amazon Web Services
September 29, 2025 - Sonnet 4.5 features in the Amazon Bedrock API Here are some highlights of Sonnet 4.5 in the Amazon Bedrock API: Smart Context Window Management – The new API introduces intelligent handling when AI models reach their maximum capacity.
Cognition
cognition.ai › blog › devin-sonnet-4-5-lessons-and-challenges
Cognition | Rebuilding Devin for Claude Sonnet 4.5: Lessons and Challenges
September 29, 2025 - Sonnet 4.5 is efficient at maximizing actions per context window through parallel tool execution -running multiple bash commands at once, reading several files simultaneously, that sort of thing.
Cline
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
September 29, 2025 - Claude Sonnet 4.5 by Anthropic is now available in Cline. With a 200k context window at the same $3/$15 pricing as Sonnet 4, this update doubles down on reliability, terseness, and stateful project memory — and Cline is the ideal environment to unlock it.
AWS
aws.amazon.com › about-aws › whats-new › 2025 › 09 › anthropics-claude-sonnet-4-5-amazon-bedrock
Anthropic’s Claude Sonnet 4.5 is now in Amazon Bedrock - AWS
September 29, 2025 - Through the Amazon Bedrock API, Claude can now automatically edit context to clear stale information from past tool calls, allowing you to maximize the model’s context. A new memory tool lets Claude store and consult information outside the context window to boost accuracy and performance. Claude Sonnet 4.5 is now available in Amazon Bedrock via global cross region inference in multiple locations.
Claude Docs
platform.claude.com › docs › en › build-with-claude › context-windows
Context windows - Claude Docs
Claude Sonnet 4.5 and Claude Haiku 4.5 feature context awareness, enabling these models to track their remaining context window (i.e. "token budget") throughout a conversation. This enables Claude to execute tasks and manage context more effectively ...
Anthropic
anthropic.com › claude › sonnet
Claude Sonnet 4.5
September 29, 2025 - Claude Sonnet 4.5 is excellent at software development tasks, learning our codebase patterns to deliver precise implementations. It handles everything from debugging to architecture with deep contextual understanding, transforming our development velocity.
Reddit
reddit.com › r/claudeai › sonet 4.5 is aware of its own context window
r/ClaudeAI on Reddit: Sonet 4.5 is aware of its own context window
October 4, 2025 -
https://cognition.ai/blog/devin-sonnet-4-5-lessons-and-challenges
Top answer 1 of 5
90
The it knows of its own context makes it pretty fucking Lazy. Because if it reaches over 50% it starts just putting TODOs in the code and marking the Task done because "It's a massive undertaking and would take Ages. Let's just add a TODO" Had to set hooks up for that which call it a lazy piece of shit each time it tries that.
2 of 5
67
Weren't people saying that the 1m context model capped at 200k context felt smarter than the 200k model? This does explain that. Sorry, It's late and I can't find sources, it was a few days ago.
Claude Docs
platform.claude.com › docs › en › about-claude › models › whats-new-claude-4-5
What's new in Claude 4.5 - Claude Docs
4 weeks ago - Advanced context management: Sonnet 4.5 maintains exceptional state tracking in external files, preserving goal-orientation across sessions. Combined with more effective context window usage and our new context management API features, the model ...
Skywork
skywork.ai › home › claude 4.5 context length: how extended memory improves conversations
Claude 4.5 Context Length & Extended Memory Explained
September 30, 2025 - The announcement describes use ... 2025). Claude’s docs note that Sonnet 4 and 4.5 support a 1M context window with the appropriate beta header and eligibility (Context windows – Claude Docs, 2025)....
Medium
medium.com › llm-stats › claude-sonnet-4-5-complete-guide-pricing-context-window-and-api-5e9c550daafd
Claude Sonnet 4.5: Complete Guide, Pricing, Context Window, and API | by Seb Crossa | LLM Stats | Medium
September 30, 2025 - Compared to GPT-5 and Gemini 2.5 ... success rates among tested models · Competitive context window size: 200k tokens with intelligent summarization...
ClaudeLog
claudelog.com › home › faqs › what is context window
What is Context Window in Claude Code | ClaudeLog
November 11, 2025 - The context window is Claude's memory capacity for a single conversation. It includes your messages, Claude's responses, file contents, and tool outputs. Most Claude models have a 200K token context window, but Claude Sonnet 4.5 via API offers ...
Claude Docs
platform.claude.com › docs › zh-TW › build-with-claude › context-windows
上下文窗口 - Claude Docs
Claude Sonnet 4 和 4.5 支持 100 萬令牌的上下文窗口。此擴展上下文窗口允許您處理更大的文檔、維護更長的對話，並使用更廣泛的代碼庫。
GitHub
github.com › anthropics › claude-code › issues › 8381
[FEATURE] Add support for 1M Context on Claude Sonnet 4.5 · Issue #8381 · anthropics/claude-code
September 29, 2025 - Add support for 1M Context on Claude Sonnet 4.5 · To use the 1M token context window, include the context-1m-2025-08-07 beta header in your API requests · No response · Medium - Would be very helpful · CLI commands and flags · No response ...
Published Sep 29, 2025
Data Studios
datastudios.org › post › claude-sonnet-4-5-context-window-expansion-caching-and-tool-use-upgrades
Claude Sonnet 4.5: Context Window Expansion, Caching, and Tool Use Upgrades
November 8, 2025 - It delivers advanced reasoning, extended context, and low-latency performance suitable for both developers and enterprise users. Released in October 2025, Sonnet 4.5 improves long-context retrieval, integrates function calling natively, and ...
LLM Stats
llm-stats.com › home › models › claude sonnet 4.5
Claude Sonnet 4.5: Pricing, Context Window, Benchmarks, and More
September 29, 2025 - A comprehensive look at Claude Sonnet 4.5 - pricing, context window, API details, benchmarks, safety improvements, and what it means for developers and enterprises. Could this be the best AI for coding?